■ put-side pain■ call-side painTotal payout option writers would owe at each settle price (both sides, all open interest, ×100 shares) — low settles hurt put writers, high settles hurt call writers. The minimum — 38 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)GSL open contracts per strike for Fri, Dec 18.
Open-interest change — building vs unwinding
Needs two observed snapshot days for this expiration — the comparison appears automatically once the next weekday snapshot lands. We diff real observations only; nothing is estimated.
Volume by strike · Fri, Dec 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 18
— call IV— put IVATM ≈ 30.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 18
Net dealer gamma per strike, in dollars per 1% move, assuming the standard convention (dealers long calls, short puts) — an assumption, not an observation. Above the amber flip level hedging tends to dampen moves; below it, to amplify them.
Greeks by strike · Fri, Dec 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.89
-0.01
34
0.0337
0.04
-0.01
-0.15
0.85
-0.01
35
0.0371
0.05
-0.01
-0.19
0.81
-0.01
36
0.0414
0.06
-0.01
-0.23
0.77
-0.01
37
0.0470
0.07
-0.01
-0.27
0.72
-0.01
38
0.0529
0.08
-0.01
-0.33
0.66
-0.01
39
0.0582
0.09
-0.01
-0.38
0.60
-0.01
40
0.0622
0.09
-0.01
-0.44
0.54
-0.01
41
0.0645
0.09
-0.01
-0.50
0.47
-0.01
42
0.0651
0.09
-0.01
-0.56
0.41
-0.01
43
0.0638
0.09
-0.01
-0.62
0.35
-0.01
44
0.0611
0.09
-0.01
-0.68
0.30
-0.01
45
0.0570
0.08
-0.01
-0.73
0.25
-0.01
46
0.0521
0.07
-0.01
-0.77
0.21
-0.01
47
0.0467
0.07
-0.01
-0.81
0.17
-0.01
48
0.0411
0.06
-0.00
-0.85
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 22 are in the CSV. Δ per $1 of underlying · Θ per day · vega per IV point.
Stacked — layer the expirations
Call open interest per strike, stacked across the checked expirations — each color is one expiry. Strikes are pruned to the liquid center of each chain.
Max pain is arithmetic, not prophecy: the settle price that would minimize what option writers pay out at expiration, computed from open interest alone. Prices sometimes gravitate toward heavy strikes into expiry — dealer hedging is a real flow — but the evidence that max pain predicts settlement better than chance is mixed, and we are not going to pretend otherwise. Use it as a map of where positioning is stacked, next to the fundamentals and the earnings calendar, not as a target.
Data: Cboe delayed public feed (~15 minutes), refreshed here about every 15 minutes. Open interest itself updates once daily, before the open. Educational information, not investment advice.